Motion-picture projecting apparatus.



` UNITED STAT-Es PATENT onirica4 `Azc'oLrH r. GALL, or Wnsr ORANGE, NEWJERSEY, AssrGNoRjBY-MESNE ASSIGN- MENTS, TO NEW JERSEY PATENT COMPANY, FWEST ORANGE,

CORPORATION OF NEW JERSEY.

'NEW JERSEY, A

MoTIoN-rIcTURE-PROJECTING-animamos. y

T o c zZZ 'z 0/01m it may concern Be it known that I, ADoLrH F. GALL, a.citizen of the United States, and a resident of West Orange, in thecounty of Essex and State of New Jersey, have invented certain new anduseful Improvements in Motion- Picture-Projecting Apparatus, ofv whichthe following is a description, A

My invention relates to motion picture projectingapparatus, andespecially to the provisionA of a screen and improved operating meanstherefor, for protecting the moving picture film from the heat emanatingfrom the projecting lamp.

5 T he principal objects of my invention are 5 Another objectI of myinvention is to pro- -vide a construction whereby the screen may bereadily applied to that type of'projecting apparatus disclosed in mycopending application, Serial No. 654,223, filed OctoberMore'particularly described, my invention comprises a screen or shutterlocated between the projecting lamp and the path of the film andimproved means connecting the film op- 5 crating mechanism and screenforfmoving the screen as described. The screen is preferably slidably orreciprocably mounted upon the usual film gate, forming a part of motionpicture projecting apparatus now in 0 use, and. the means for movingsaid screen preferably comprises a centrifuge adj ustably connected tothe Iilm operating mechanism, the screen being preferably supported fromthe centrifuge.

5 Further 'objects of my invention will be.

scription and appended claims:

In orderthat my invention may be more clearly understood, reference 1smade to the ,more fully disclosed in the following deo accompanyingdrawings, forming apart of,

this specification, in which the same reference characters designatecorresponding parts throughout and in which: p l Figure lis asideelevation, partly-insec- Specication of Letters Patent. Application meap1-i1 2o, 1912.v serial No'. 691,989.v

,limit the movement of the screen.l

Patenteanpr.' 14., '1914.

OII., 0f a portion of a motion picture pro- .jecting apparatus, of thetype' disclosed in my application referred vto above,.andillus tratingone embodiment of my invention as` applied thereto; 2, is afront'elevation of the apparatus, shown in Fig. 1, the` lower portionbeing broken away; Fig. 3 is a -section on line33 of Fig. 1, thescreenbeing shown in elevation', and Fig. 4 is'a sectional View of theapparatus'. taken onf a line through .the centrifuge at. right angles toits supporting shaft,-.partly v in elevation and partly broken away, andin vwhich the weights of the centrifuge are shown in their I outermostpositions.

In the accompanying drawings, reference character 1 deslgnates the mamsupport for the film operating mechanism, in which main 'support anauxiliary support 2is adjustably mounted. Handle 3, pulley 4, gears 5and l6, shaft 7 and {i3/"wheel 8 Aform a .part of the film operatingmechanism carried by the main and auxiliary supports 1 and 2. To

- one side ofthe auriliary frame 2 is fastened anexposure plate 9 towhich is pivoted the film gate 1 .0 by means ofa rod 11 mounted insuitable bearings on the exposure plate. The exposure plate has a seriesof exposure or projection apertures 12 and vertical guide ways 13 forsupporting the. film, A latch j 14 on the exposure plate serves to locjkthe film gate in closed position,l the film gate being provided with anopening `15,regis tering with projection apertures 12 when the gate isclosed, and-a tension plate 16 for cooperation with guide ways 13 tohold the ilm flat While it is fed through -exposure position. For amoredetailed description of the structure outlined above, reference is madeto my'co'pending application above referred to.

In the rear of the ilmgate-is vlocated a film protecting screen 17. Thisscreen is formed of any suitable material, such as aluminum, and ispreferably L-shaped, with one leg extending horizontally,'between thefilm gate and the exposure' plate. The

screen is preferably slidably or reciprocably mounted on the film gatelOvin any suitable manner, as by a pairof aperturedlugs 18 formed on itsvertical leg, loosely engaging rod 11. 4The lugs 18 preferably extend,into plate 9 to" .pro'vide notches 19 formedin the exposure slowly, thescreen will be'support'ed in a position covering the projectionapertures,

` so as to prevent the film from being injured by the heat from theprojecting lamp, but whicln, when4v the speedv of.l the operatingmechanism attains a predetermined amount, will move the screen touncover said open-- ings, to allow the pictures to be properlyprojected. This means preferably coinprises an arm 20 piyoted at one end21 to the auxiliary casing 2 and suitably connected at its other end, asby a yoke 22, to the lower lug 18 of the screen, and a centrifuge 23 c0-acting with said arm.- The centrifuge'pref-l erably comprises a hollowcylindrical casing having one or' more weights 24 loosely I mountedtherein, the outer peripheryv of the casin being provided with an'annular'slot 25. he hub 26 of the casing is preferably splined to shaft7, as by a key 27 and is connected to the auxiliary casing 2 so Aas tobe movable therewith, but free to rotate' with respect thereto. Arm 2Ois provided with' a portionv 28 which lies within slot 25 whereby thearm is supported by the uppermost weight 24 of the centrifuge.

lThe operation is as follows: When the film operating mechanism is atrest,` or is driven very slowly, weights 24, arm 20 and screen 17 willbc in the posit-ions shown in Figs. 1 and-2 under the action :ofgravity. VUpon the actuation of the film operating 4ture 'mechanism' ator above 4a predetermined speed, however, weights 24 will, under theinfluence of centrifugal force, assume the positions shown in Fig. 4forcing 'arm 20 upwardly and thereby moving screen 17 .touncover'openings -l2'and 15, to allow the P'C- tures on the iilmto beproperly projectod.

Although I have shown a construction in Y which the'scree'n is appliedto a motion picrojectin'g apparatus of the' type disclosed7 in myapplication previously referredto, it'willb'e'evident that the screenaudits .operating m'eansmaybe applied to any mo.-

tion picture' projecting apparatus, such, for

example, as one adaptedfor use only with a film having a'single row ofpictures. In .this case,-the splinedA connection between the centrifugeand its operating shaft would be unnecessary. Having thus fullydescribed my invention, what I claim and desire to protect by LettersPatent is as follows: -1

1. In a motion picture projecting apparatus havin a projection aperture,film operating mec anism, a screen, a centrifuge hav- 60 ing anoutwardly movable weight, and a member applied'directly to said weightfor` normally supporting the screen in a' position covering said.aperture and adapted upon the'actuation of said 4film operatingmechanism to'be moved by said weight away from 'the axis' ofthecentrifuge and -thereupon move the screen so as to uncover saidaperture,y substantially as described. i

' 2. In a motion-picture projectin v'apparatus having a projectionaperture, m operating mechanism, a reciprocating screen,

and means including a centrifuge comprising a casing having a weightloosely mounted. therein operativelyconnected with the film operatingmechanism for normally supporting the screen in' a 4osition coveringsaid aperture and'adaptf ,upon the actuation of said film operatingmechanism to 'reciprocate .the screen so as to uncover said aperture,substantially as described..

3., Ina-4 motion picture projecting apparatus havin a projectionaperture, film operating me'c anism, a reciprocatory screen nor- -mallycovering said a erture, and means operatively/'connected with said filmoperating mechanism. to reciprocate said screen fto uncover saidaperture upon actuation of the film operatingmechanism, said meanscomprising a centrifuge consisting of'a casingwith a plurality ofweights loosely mounted therein, substantiallyfas described. 4

4. In a motion picture projecting appara-` ,means and thereby move thescreen to untus having a projection aperture, film oper- \atingmechanism, means operatively concover said aperture, substantially asdescribed.

5. In a motion picture projecting apparatus havin a projection aperture,film operating mec anism, a screen, and means connecting the'screen andfilm operating mechanism comprising a, centrifuge having a movableweight and a screen-operating member applied directly to said weight andnormally supporting 1said screen in a position covering said aperture,tlie actuation of the film operating mechanism causing the weight toactuatesaid member and thereby move said screen. to uncover saidaperture, substantially as described.' A l 6. In a inot'on pictureprojecting-apparatus having a projection aperture, film operatingmechanism, a screen, means operatively -connected to the film operatingmechanism forcontrolling the positionof said screen comprising arotatable cylindrical) casing containing a pluralityv of weights'movable outwardly under Ycentrifugal action, 'said casing having anannular slot in its` outerv periphery, and an arm pivoted at one en'd,and connected to the screen at its other end, said arm lying in saidslot'for engagement with the weights, substantially as described.-

iioA

7. In a motion picture projecting apparatus, `the combination With themain support carrying film operating mechanism and theauxiliary supporthaving a plurality of projection apertures and adjustable in the mainsupport so that any one of its apertures may be brought in the pathofthe projecting light, of a screen normally covering the aperture inthe path of the light, and means movable with the auxiliary support andoperatively connected with the filmoperating mechanism adapted uponactuation' of said film operating mechanism to move said screen touncover said last named aperture, substantially as described.

8'. In a motion picture projecting apparatus, the combination with themain support carrying film operating mechanism and the auxiliary supporthaving a plurality of projection apertures and adjustable laterally inthe main support so that any one of its apertures may be brought in thepath of the projecting light, of a screen, and means for normallysupporting said screen in aposition covering said apertures, said 'meansbeing movable with said auxiliary 'support and operatively connectedwith the film operating mechanism and adapted upon actuation of the filmoperating mechanism to move the screen to uncover said apertures,substantially as described'.

9; In' a motion picture Aprojecting apparatus, the combination with themain support carrying film operating mechanism, the auxiliary supporthaying a plurality of projecting apertures and adjustable in the mainsupport so that any one of its apertures may be brought in the path ofthe projecting light and the film gate on t-he auxiliary supporthavingan aperture registering Wit-h the apertures of the auxiliary supportwhen the gate is closed, of' a screen on said gate, and means movablewith the auxiliary support for normally supporting the screen -in aposition covering said apertures and adapted on actuation of the filmoperating mechanism to move the screen to uncover thc apertures, saidmeans including acentrifuge comprising a hollow casing and a weightmounted therein, substantially as described. 1

10. In a motion picture projecting apparatus, the combination with themain support carrying film operating mechanism andthe auxiliary supporthaving a. plural-` ity of Aprojection apertures :and adjustaliile in themain support. so that any one of its apertures may be brought in thepath of the projecting light, ota. screen.. and means movable with theauxiliary support for normally supporting the screen in a posit-ioncovering said ajicrtures, and adapted on actuation of thel filmoperating mechanism to move the screen to uncover said. apertures, saidmeans including a. centrifuge compusing a slotted casing with a weightmounted therein and a pivoted arm connected to the screen and .lyingwithin the slot of the said easing in contact with said Weight,substantially as described. i,

`1l. In .a motion picture'lprojecting apparatus, the combination withthe main support carrying film operating mechanism and the auxiliarysupport having a plurality of projection apertures and adjustable inthemain support sovthat any one of its apertures may be brought in the pathof the projecting light, of a' screen normally covering the apertureinthe path of the light, and means movable with the auxiliarysupportadapted uponlactuation o't said film operating mechanism to movesaid screen to uncover said last named aperture, said means including acentrifuge -comprising -a casing having a weight moupted therein,substantially as described. j l2. in a motion picture projectingapparatus having a projection aperture, film operating mechanism, areciprecatory screen normally covering' said aperture. and meansoperatively connected with said filmoperating mechanism to reciprocatesaid screen to uncover said aperture upon actuation of. the filnroperating mechanism, said means comprising a casing having a weightloosely mounted therein, substantially as described.

13. In a motionpicture projecting apparatus, a movably mounted screen. ascreenoperating member, and a centrifuge comprising an outwardly movableweight, said weight being applied directly to said screenoperatingmember and causing, by its out- Ward movement, movement ofthe-screenoperating member away from the axis of the centrifuge,substantially as described.

14. In a. motion picture projecting apparatus, a movably mountedscrecii, a pivoted :screen-operating member and a centrifuge comprisingan outwardly movable Weight, said Weightbeing applied directly to saidscreen-operating member and causing, by its outward movement` movementofthe screenopcrating member about its pivot and away' from the axis ofthe centrifuge, substantially as described. j

In a motion pictine'projecting apparatus, a movahly mounted screen, apivoted screen-operating member connected directly to said screen and acentrifuge comprising an outwardly movable weight. said weightbeingapplied directly to said screcn-operating `memlmr and causing. byits outward. movemcft, movement ofthe screen-operating member about itspivot and away from tl] i .axis of the centrifuge, substantially asdc'cribed. l

1G. In a motion picture projeclir, apparatus, a movably mounted screen.:i eentrifuge con'iprising a. casing and an outwardly movable weighttherein, means for so j ies

'zo s main support, a'movably mounted screen in -the` rear of the film,and screen-operating actuating 'said centrifuge, and'screen-operatingmeans separate from said centrifuge andactuating means and comprising ameinweight, said weight causing, by its outward 15- movement, movementof -said member about -its pivot, substantially as described'.

' 18. In Aa', motion picture projecting apparatus, a main supportcarrying film operatin mechanism, an auxiliary support carry- -.ing thefilm and laterally adjustable on said I means movable with the auxiliarysupport and driven bythe film operating'l mechanism VofV the mainsupport, substantially as de scribed. f

l 1,19. Ina motion picture projecting apparatis, a main support,carrying 'film operat ingfinechanism, an auxiliary support carrying'the film and ing the film and laterally adjustable-on said main support,a movably mounted screen in the rear of the film, and screen-operatingmeans movable with the-auxiliary support and\dr iven` by the filmoperating mechanism of the main support,-said means comprising acentrifuge having an outwardly movable weight and a member connectedwith said screen and applied directly to said weight,

the outward movement of said weight causing movement of'saidmember awayfrom described,

vthe axis of the centrifuge, substantially, as

20. In a motion picture projecting appa-l ratus, a main support carryingfilm operating mechanism, an auxiliary support carrylaterally adjustableon the main support, a movably mounted screen in the rear of the film,and screen-operating means movable with the auxiliary support and drivenby the lm operating mechanism of the main support, said means comprisingA'a centrifuge,substantially as described.

. This specification signed and witnessed.

this 19th dayof April 1912. c

- ADOLPH F. GALL.-

. Witnesses: v

WILLIAM A. HARDY, ANNA R. KLEHM.

